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Finding the Fourth Proportional to 77,990.56, 116,985.84 and 22,586.56

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Solution

The fourth proportional to 77,990.56, 116,985.84 and 22,586.56 is: 33,879.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,990.56 : 116,985.84 = 22,586.56 : x
  2. Step 2: Convert to fraction form
    77,990.56/116,985.84 = 22,586.56/x
  3. Step 3: Cross multiply
    77,990.56x = 116,985.84 × 22,586.56
  4. Step 4: Simplify right side
    77,990.56x = 2,642,307,694.31
  5. Step 5: Solve for x
    x = 2,642,307,694.31/77,990.56
  6. Step 6: Final answer
    x = 33,879.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.